The Brussels office market closed 2025 in relatively stable shape, with both occupier activity and investment showing signs of normalization after a few mixed years. Overall, the year ended on a firmer footing than it began.
Leasing activity held up well. Rather than a large number of small deals, most of the year’s momentum came from a handful of sizeable commitments. European institutions played an outsized role again, making long-term decisions that reinforce their place in the central districts. Outside of the EU institutions, a mix of corporate, public-sector, and education tenants helped keep demand steady. Schools in particular remained active, often turning to office buildings as a practical way to add space. Flexible workspace operators also expanded, tapping into ongoing demand for adaptable solutions.
Vacancy remained largely unchanged. Some recently delivered buildings added space to the market, but well-located assets continued to lease at a steady pace. Central areas held up better than peripheral zones, which experienced weaker activity. Even so, the overall picture was one of relative balance rather than sharp swings in availability.
On the rental side, headline prime rents remained steady in the final quarter, but average rents continued to rise. Demand for high quality space in core locations pushed typical rents higher than what used to be considered premium only a few years ago. This shift reflects ongoing competition for top tier buildings, even as broader economic conditions remain mixed.
Developers delivered a modest amount of new space during the year, and most of it was absorbed quickly. Looking ahead, a larger wave of new projects is scheduled for 2026 and 2027. A good share of these upcoming buildings is in the city’s most established districts, and early commitments suggest continued confidence among occupiers planning for the medium term.
Investment activity showed a market still adjusting to the higher rate environment of recent years. Most Q4 transactions were value add or redevelopment plays rather than core acquisitions, though a couple of notable deals suggest that investors are reconsidering the core segment. If broader economic conditions continue to settle, 2026 could bring more movement in that direction.
Overall, Brussels ended 2025 with a balanced mix of steady leasing, stable vacancy, and a development pipeline that reflects realistic demand. While the market is not in rapid growth mode, it is showing resilience—and entering 2026 with clearer signs of stability than it has seen in some time.
